1/*
2 * Copyright (C) 2007-2008 Esmertec AG.
3 * Copyright (C) 2007-2008 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package com.google.android.mms.pdu;
19
20import com.google.android.mms.ContentType;
21import com.google.android.mms.InvalidHeaderValueException;
22import com.google.android.mms.MmsException;
23import com.google.android.mms.util.PduCache;
24import com.google.android.mms.util.PduCacheEntry;
25import com.google.android.mms.util.SqliteWrapper;
26
27import android.content.ContentResolver;
28import android.content.ContentUris;
29import android.content.ContentValues;
30import android.content.Context;
31import android.database.Cursor;
32import android.database.DatabaseUtils;
33import android.net.Uri;
34import android.provider.Telephony;
35import android.provider.Telephony.Mms;
36import android.provider.Telephony.MmsSms;
37import android.provider.Telephony.Threads;
38import android.provider.Telephony.Mms.Addr;
39import android.provider.Telephony.Mms.Part;
40import android.provider.Telephony.MmsSms.PendingMessages;
41import android.text.TextUtils;
42import android.util.Config;
43import android.util.Log;
44
45import java.io.ByteArrayOutputStream;
46import java.io.FileNotFoundException;
47import java.io.IOException;
48import java.io.InputStream;
49import java.io.OutputStream;
50import java.io.UnsupportedEncodingException;
51import java.util.ArrayList;
52import java.util.HashMap;
53import java.util.HashSet;
54import java.util.Map;
55import java.util.Set;
56import java.util.Map.Entry;
57
58import com.google.android.mms.pdu.EncodedStringValue;
59
60/**
61 * This class is the high-level manager of PDU storage.
62 */
63public class PduPersister {
64    private static final String TAG = "PduPersister";
65    private static final boolean DEBUG = false;
66    private static final boolean LOCAL_LOGV = DEBUG ? Config.LOGD : Config.LOGV;
67
68    private static final long DUMMY_THREAD_ID = Long.MAX_VALUE;
69
70    /**
71     * The uri of temporary drm objects.
72     */
73    public static final String TEMPORARY_DRM_OBJECT_URI =
74        "content://mms/" + Long.MAX_VALUE + "/part";
75    /**
76     * Indicate that we transiently failed to process a MM.
77     */
78    public static final int PROC_STATUS_TRANSIENT_FAILURE   = 1;
79    /**
80     * Indicate that we permanently failed to process a MM.
81     */
82    public static final int PROC_STATUS_PERMANENTLY_FAILURE = 2;
83    /**
84     * Indicate that we have successfully processed a MM.
85     */
86    public static final int PROC_STATUS_COMPLETED           = 3;
87
88    private static PduPersister sPersister;
89    private static final PduCache PDU_CACHE_INSTANCE;
90
91    private static final int[] ADDRESS_FIELDS = new int[] {
92            PduHeaders.BCC,
93            PduHeaders.CC,
94            PduHeaders.FROM,
95            PduHeaders.TO
96    };
97
98    private static final String[] PDU_PROJECTION = new String[] {
99        Mms._ID,
100        Mms.MESSAGE_BOX,
101        Mms.THREAD_ID,
102        Mms.RETRIEVE_TEXT,
103        Mms.SUBJECT,
104        Mms.CONTENT_LOCATION,
105        Mms.CONTENT_TYPE,
106        Mms.MESSAGE_CLASS,
107        Mms.MESSAGE_ID,
108        Mms.RESPONSE_TEXT,
109        Mms.TRANSACTION_ID,
110        Mms.CONTENT_CLASS,
111        Mms.DELIVERY_REPORT,
112        Mms.MESSAGE_TYPE,
113        Mms.MMS_VERSION,
114        Mms.PRIORITY,
115        Mms.READ_REPORT,
116        Mms.READ_STATUS,
117        Mms.REPORT_ALLOWED,
118        Mms.RETRIEVE_STATUS,
119        Mms.STATUS,
120        Mms.DATE,
121        Mms.DELIVERY_TIME,
122        Mms.EXPIRY,
123        Mms.MESSAGE_SIZE,
124        Mms.SUBJECT_CHARSET,
125        Mms.RETRIEVE_TEXT_CHARSET,
126    };
127
128    private static final int PDU_COLUMN_ID                    = 0;
129    private static final int PDU_COLUMN_MESSAGE_BOX           = 1;
130    private static final int PDU_COLUMN_THREAD_ID             = 2;
131    private static final int PDU_COLUMN_RETRIEVE_TEXT         = 3;
132    private static final int PDU_COLUMN_SUBJECT               = 4;
133    private static final int PDU_COLUMN_CONTENT_LOCATION      = 5;
134    private static final int PDU_COLUMN_CONTENT_TYPE          = 6;
135    private static final int PDU_COLUMN_MESSAGE_CLASS         = 7;
136    private static final int PDU_COLUMN_MESSAGE_ID            = 8;
137    private static final int PDU_COLUMN_RESPONSE_TEXT         = 9;
138    private static final int PDU_COLUMN_TRANSACTION_ID        = 10;
139    private static final int PDU_COLUMN_CONTENT_CLASS         = 11;
140    private static final int PDU_COLUMN_DELIVERY_REPORT       = 12;
141    private static final int PDU_COLUMN_MESSAGE_TYPE          = 13;
142    private static final int PDU_COLUMN_MMS_VERSION           = 14;
143    private static final int PDU_COLUMN_PRIORITY              = 15;
144    private static final int PDU_COLUMN_READ_REPORT           = 16;
145    private static final int PDU_COLUMN_READ_STATUS           = 17;
146    private static final int PDU_COLUMN_REPORT_ALLOWED        = 18;
147    private static final int PDU_COLUMN_RETRIEVE_STATUS       = 19;
148    private static final int PDU_COLUMN_STATUS                = 20;
149    private static final int PDU_COLUMN_DATE                  = 21;
150    private static final int PDU_COLUMN_DELIVERY_TIME         = 22;
151    private static final int PDU_COLUMN_EXPIRY                = 23;
152    private static final int PDU_COLUMN_MESSAGE_SIZE          = 24;
153    private static final int PDU_COLUMN_SUBJECT_CHARSET       = 25;
154    private static final int PDU_COLUMN_RETRIEVE_TEXT_CHARSET = 26;
155
156    private static final String[] PART_PROJECTION = new String[] {
157        Part._ID,
158        Part.CHARSET,
159        Part.CONTENT_DISPOSITION,
160        Part.CONTENT_ID,
161        Part.CONTENT_LOCATION,
162        Part.CONTENT_TYPE,
163        Part.FILENAME,
164        Part.NAME,
165        Part.TEXT
166    };
167
168    private static final int PART_COLUMN_ID                  = 0;
169    private static final int PART_COLUMN_CHARSET             = 1;
170    private static final int PART_COLUMN_CONTENT_DISPOSITION = 2;
171    private static final int PART_COLUMN_CONTENT_ID          = 3;
172    private static final int PART_COLUMN_CONTENT_LOCATION    = 4;
173    private static final int PART_COLUMN_CONTENT_TYPE        = 5;
174    private static final int PART_COLUMN_FILENAME            = 6;
175    private static final int PART_COLUMN_NAME                = 7;
176    private static final int PART_COLUMN_TEXT                = 8;
177
178    private static final HashMap<Uri, Integer> MESSAGE_BOX_MAP;
179    // These map are used for convenience in persist() and load().
180    private static final HashMap<Integer, Integer> CHARSET_COLUMN_INDEX_MAP;
181    private static final HashMap<Integer, Integer> ENCODED_STRING_COLUMN_INDEX_MAP;
182    private static final HashMap<Integer, Integer> TEXT_STRING_COLUMN_INDEX_MAP;
183    private static final HashMap<Integer, Integer> OCTET_COLUMN_INDEX_MAP;
184    private static final HashMap<Integer, Integer> LONG_COLUMN_INDEX_MAP;
185    private static final HashMap<Integer, String> CHARSET_COLUMN_NAME_MAP;
186    private static final HashMap<Integer, String> ENCODED_STRING_COLUMN_NAME_MAP;
187    private static final HashMap<Integer, String> TEXT_STRING_COLUMN_NAME_MAP;
188    private static final HashMap<Integer, String> OCTET_COLUMN_NAME_MAP;
189    private static final HashMap<Integer, String> LONG_COLUMN_NAME_MAP;
190
191    static {
192        MESSAGE_BOX_MAP = new HashMap<Uri, Integer>();
193        MESSAGE_BOX_MAP.put(Mms.Inbox.CONTENT_URI,  Mms.MESSAGE_BOX_INBOX);
194        MESSAGE_BOX_MAP.put(Mms.Sent.CONTENT_URI,   Mms.MESSAGE_BOX_SENT);
195        MESSAGE_BOX_MAP.put(Mms.Draft.CONTENT_URI,  Mms.MESSAGE_BOX_DRAFTS);
196        MESSAGE_BOX_MAP.put(Mms.Outbox.CONTENT_URI, Mms.MESSAGE_BOX_OUTBOX);
197
198        CHARSET_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
199        CHARSET_COLUMN_INDEX_MAP.put(PduHeaders.SUBJECT, PDU_COLUMN_SUBJECT_CHARSET);
200        CHARSET_COLUMN_INDEX_MAP.put(PduHeaders.RETRIEVE_TEXT, PDU_COLUMN_RETRIEVE_TEXT_CHARSET);
201
202        CHARSET_COLUMN_NAME_MAP = new HashMap<Integer, String>();
203        CHARSET_COLUMN_NAME_MAP.put(PduHeaders.SUBJECT, Mms.SUBJECT_CHARSET);
204        CHARSET_COLUMN_NAME_MAP.put(PduHeaders.RETRIEVE_TEXT, Mms.RETRIEVE_TEXT_CHARSET);
205
206        // Encoded string field code -> column index/name map.
207        ENCODED_STRING_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
208        ENCODED_STRING_COLUMN_INDEX_MAP.put(PduHeaders.RETRIEVE_TEXT, PDU_COLUMN_RETRIEVE_TEXT);
209        ENCODED_STRING_COLUMN_INDEX_MAP.put(PduHeaders.SUBJECT, PDU_COLUMN_SUBJECT);
210
211        ENCODED_STRING_COLUMN_NAME_MAP = new HashMap<Integer, String>();
212        ENCODED_STRING_COLUMN_NAME_MAP.put(PduHeaders.RETRIEVE_TEXT, Mms.RETRIEVE_TEXT);
213        ENCODED_STRING_COLUMN_NAME_MAP.put(PduHeaders.SUBJECT, Mms.SUBJECT);
214
215        // Text string field code -> column index/name map.
216        TEXT_STRING_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
217        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.CONTENT_LOCATION, PDU_COLUMN_CONTENT_LOCATION);
218        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.CONTENT_TYPE, PDU_COLUMN_CONTENT_TYPE);
219        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.MESSAGE_CLASS, PDU_COLUMN_MESSAGE_CLASS);
220        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.MESSAGE_ID, PDU_COLUMN_MESSAGE_ID);
221        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.RESPONSE_TEXT, PDU_COLUMN_RESPONSE_TEXT);
222        TEXT_STRING_COLUMN_INDEX_MAP.put(PduHeaders.TRANSACTION_ID, PDU_COLUMN_TRANSACTION_ID);
223
224        TEXT_STRING_COLUMN_NAME_MAP = new HashMap<Integer, String>();
225        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.CONTENT_LOCATION, Mms.CONTENT_LOCATION);
226        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.CONTENT_TYPE, Mms.CONTENT_TYPE);
227        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.MESSAGE_CLASS, Mms.MESSAGE_CLASS);
228        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.MESSAGE_ID, Mms.MESSAGE_ID);
229        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.RESPONSE_TEXT, Mms.RESPONSE_TEXT);
230        TEXT_STRING_COLUMN_NAME_MAP.put(PduHeaders.TRANSACTION_ID, Mms.TRANSACTION_ID);
231
232        // Octet field code -> column index/name map.
233        OCTET_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
234        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.CONTENT_CLASS, PDU_COLUMN_CONTENT_CLASS);
235        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.DELIVERY_REPORT, PDU_COLUMN_DELIVERY_REPORT);
236        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.MESSAGE_TYPE, PDU_COLUMN_MESSAGE_TYPE);
237        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.MMS_VERSION, PDU_COLUMN_MMS_VERSION);
238        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.PRIORITY, PDU_COLUMN_PRIORITY);
239        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.READ_REPORT, PDU_COLUMN_READ_REPORT);
240        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.READ_STATUS, PDU_COLUMN_READ_STATUS);
241        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.REPORT_ALLOWED, PDU_COLUMN_REPORT_ALLOWED);
242        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.RETRIEVE_STATUS, PDU_COLUMN_RETRIEVE_STATUS);
243        OCTET_COLUMN_INDEX_MAP.put(PduHeaders.STATUS, PDU_COLUMN_STATUS);
244
245        OCTET_COLUMN_NAME_MAP = new HashMap<Integer, String>();
246        OCTET_COLUMN_NAME_MAP.put(PduHeaders.CONTENT_CLASS, Mms.CONTENT_CLASS);
247        OCTET_COLUMN_NAME_MAP.put(PduHeaders.DELIVERY_REPORT, Mms.DELIVERY_REPORT);
248        OCTET_COLUMN_NAME_MAP.put(PduHeaders.MESSAGE_TYPE, Mms.MESSAGE_TYPE);
249        OCTET_COLUMN_NAME_MAP.put(PduHeaders.MMS_VERSION, Mms.MMS_VERSION);
250        OCTET_COLUMN_NAME_MAP.put(PduHeaders.PRIORITY, Mms.PRIORITY);
251        OCTET_COLUMN_NAME_MAP.put(PduHeaders.READ_REPORT, Mms.READ_REPORT);
252        OCTET_COLUMN_NAME_MAP.put(PduHeaders.READ_STATUS, Mms.READ_STATUS);
253        OCTET_COLUMN_NAME_MAP.put(PduHeaders.REPORT_ALLOWED, Mms.REPORT_ALLOWED);
254        OCTET_COLUMN_NAME_MAP.put(PduHeaders.RETRIEVE_STATUS, Mms.RETRIEVE_STATUS);
255        OCTET_COLUMN_NAME_MAP.put(PduHeaders.STATUS, Mms.STATUS);
256
257        // Long field code -> column index/name map.
258        LONG_COLUMN_INDEX_MAP = new HashMap<Integer, Integer>();
259        LONG_COLUMN_INDEX_MAP.put(PduHeaders.DATE, PDU_COLUMN_DATE);
260        LONG_COLUMN_INDEX_MAP.put(PduHeaders.DELIVERY_TIME, PDU_COLUMN_DELIVERY_TIME);
261        LONG_COLUMN_INDEX_MAP.put(PduHeaders.EXPIRY, PDU_COLUMN_EXPIRY);
262        LONG_COLUMN_INDEX_MAP.put(PduHeaders.MESSAGE_SIZE, PDU_COLUMN_MESSAGE_SIZE);
263
264        LONG_COLUMN_NAME_MAP = new HashMap<Integer, String>();
265        LONG_COLUMN_NAME_MAP.put(PduHeaders.DATE, Mms.DATE);
266        LONG_COLUMN_NAME_MAP.put(PduHeaders.DELIVERY_TIME, Mms.DELIVERY_TIME);
267        LONG_COLUMN_NAME_MAP.put(PduHeaders.EXPIRY, Mms.EXPIRY);
268        LONG_COLUMN_NAME_MAP.put(PduHeaders.MESSAGE_SIZE, Mms.MESSAGE_SIZE);
269
270        PDU_CACHE_INSTANCE = PduCache.getInstance();
271     }
272
273    private final Context mContext;
274    private final ContentResolver mContentResolver;
275
276    private PduPersister(Context context) {
277        mContext = context;
278        mContentResolver = context.getContentResolver();
279     }
280
281    /** Get(or create if not exist) an instance of PduPersister */
282    public static PduPersister getPduPersister(Context context) {
283        if ((sPersister == null) || !context.equals(sPersister.mContext)) {
284            sPersister = new PduPersister(context);
285        }
286
287        return sPersister;
288    }
289
290    private void setEncodedStringValueToHeaders(
291            Cursor c, int columnIndex,
292            PduHeaders headers, int mapColumn) {
293        String s = c.getString(columnIndex);
294        if ((s != null) && (s.length() > 0)) {
295            int charsetColumnIndex = CHARSET_COLUMN_INDEX_MAP.get(mapColumn);
296            int charset = c.getInt(charsetColumnIndex);
297            EncodedStringValue value = new EncodedStringValue(
298                    charset, getBytes(s));
299            headers.setEncodedStringValue(value, mapColumn);
300        }
301    }
302
303    private void setTextStringToHeaders(
304            Cursor c, int columnIndex,
305            PduHeaders headers, int mapColumn) {
306        String s = c.getString(columnIndex);
307        if (s != null) {
308            headers.setTextString(getBytes(s), mapColumn);
309        }
310    }
311
312    private void setOctetToHeaders(
313            Cursor c, int columnIndex,
314            PduHeaders headers, int mapColumn) throws InvalidHeaderValueException {
315        if (!c.isNull(columnIndex)) {
316            int b = c.getInt(columnIndex);
317            headers.setOctet(b, mapColumn);
318        }
319    }
320
321    private void setLongToHeaders(
322            Cursor c, int columnIndex,
323            PduHeaders headers, int mapColumn) {
324        if (!c.isNull(columnIndex)) {
325            long l = c.getLong(columnIndex);
326            headers.setLongInteger(l, mapColumn);
327        }
328    }
329
330    private Integer getIntegerFromPartColumn(Cursor c, int columnIndex) {
331        if (!c.isNull(columnIndex)) {
332            return c.getInt(columnIndex);
333        }
334        return null;
335    }
336
337    private byte[] getByteArrayFromPartColumn(Cursor c, int columnIndex) {
338        if (!c.isNull(columnIndex)) {
339            return getBytes(c.getString(columnIndex));
340        }
341        return null;
342    }
343
344    private PduPart[] loadParts(long msgId) throws MmsException {
345        Cursor c = SqliteWrapper.query(mContext, mContentResolver,
346                Uri.parse("content://mms/" + msgId + "/part"),
347                PART_PROJECTION, null, null, null);
348
349        PduPart[] parts = null;
350
351        try {
352            if ((c == null) || (c.getCount() == 0)) {
353                if (LOCAL_LOGV) {
354                    Log.v(TAG, "loadParts(" + msgId + "): no part to load.");
355                }
356                return null;
357            }
358
359            int partCount = c.getCount();
360            int partIdx = 0;
361            parts = new PduPart[partCount];
362            while (c.moveToNext()) {
363                PduPart part = new PduPart();
364                Integer charset = getIntegerFromPartColumn(
365                        c, PART_COLUMN_CHARSET);
366                if (charset != null) {
367                    part.setCharset(charset);
368                }
369
370                byte[] contentDisposition = getByteArrayFromPartColumn(
371                        c, PART_COLUMN_CONTENT_DISPOSITION);
372                if (contentDisposition != null) {
373                    part.setContentDisposition(contentDisposition);
374                }
375
376                byte[] contentId = getByteArrayFromPartColumn(
377                        c, PART_COLUMN_CONTENT_ID);
378                if (contentId != null) {
379                    part.setContentId(contentId);
380                }
381
382                byte[] contentLocation = getByteArrayFromPartColumn(
383                        c, PART_COLUMN_CONTENT_LOCATION);
384                if (contentLocation != null) {
385                    part.setContentLocation(contentLocation);
386                }
387
388                byte[] contentType = getByteArrayFromPartColumn(
389                        c, PART_COLUMN_CONTENT_TYPE);
390                if (contentType != null) {
391                    part.setContentType(contentType);
392                } else {
393                    throw new MmsException("Content-Type must be set.");
394                }
395
396                byte[] fileName = getByteArrayFromPartColumn(
397                        c, PART_COLUMN_FILENAME);
398                if (fileName != null) {
399                    part.setFilename(fileName);
400                }
401
402                byte[] name = getByteArrayFromPartColumn(
403                        c, PART_COLUMN_NAME);
404                if (name != null) {
405                    part.setName(name);
406                }
407
408                // Construct a Uri for this part.
409                long partId = c.getLong(PART_COLUMN_ID);
410                Uri partURI = Uri.parse("content://mms/part/" + partId);
411                part.setDataUri(partURI);
412
413                // For images/audio/video, we won't keep their data in Part
414                // because their renderer accept Uri as source.
415                String type = toIsoString(contentType);
416                if (!ContentType.isImageType(type)
417                        && !ContentType.isAudioType(type)
418                        && !ContentType.isVideoType(type)) {
419                    ByteArrayOutputStream baos = new ByteArrayOutputStream();
420                    InputStream is = null;
421
422                    // Store simple string values directly in the database instead of an
423                    // external file.  This makes the text searchable and retrieval slightly
424                    // faster.
425                    if ("text/plain".equals(type) || "application/smil".equals(type)) {
426                        String text = c.getString(PART_COLUMN_TEXT);
427                        byte [] blob = new EncodedStringValue(text != null ? text : "")
428                            .getTextString();
429                        baos.write(blob, 0, blob.length);
430                    } else {
431
432                        try {
433                            is = mContentResolver.openInputStream(partURI);
434
435                            byte[] buffer = new byte[256];
436                            int len = is.read(buffer);
437                            while (len >= 0) {
438                                baos.write(buffer, 0, len);
439                                len = is.read(buffer);
440                            }
441                        } catch (IOException e) {
442                            Log.e(TAG, "Failed to load part data", e);
443                            c.close();
444                            throw new MmsException(e);
445                        } finally {
446                            if (is != null) {
447                                try {
448                                    is.close();
449                                } catch (IOException e) {
450                                    Log.e(TAG, "Failed to close stream", e);
451                                } // Ignore
452                            }
453                        }
454                    }
455                    part.setData(baos.toByteArray());
456                }
457                parts[partIdx++] = part;
458            }
459        } finally {
460            if (c != null) {
461                c.close();
462            }
463        }
464
465        return parts;
466    }
467
468    private void loadAddress(long msgId, PduHeaders headers) {
469        Cursor c = SqliteWrapper.query(mContext, mContentResolver,
470                Uri.parse("content://mms/" + msgId + "/addr"),
471                new String[] { Addr.ADDRESS, Addr.CHARSET, Addr.TYPE },
472                null, null, null);
473
474        if (c != null) {
475            try {
476                while (c.moveToNext()) {
477                    String addr = c.getString(0);
478                    if (!TextUtils.isEmpty(addr)) {
479                        int addrType = c.getInt(2);
480                        switch (addrType) {
481                            case PduHeaders.FROM:
482                                headers.setEncodedStringValue(
483                                        new EncodedStringValue(c.getInt(1), getBytes(addr)),
484                                        addrType);
485                                break;
486                            case PduHeaders.TO:
487                            case PduHeaders.CC:
488                            case PduHeaders.BCC:
489                                headers.appendEncodedStringValue(
490                                        new EncodedStringValue(c.getInt(1), getBytes(addr)),
491                                        addrType);
492                                break;
493                            default:
494                                Log.e(TAG, "Unknown address type: " + addrType);
495                                break;
496                        }
497                    }
498                }
499            } finally {
500                c.close();
501            }
502        }
503    }
504
505    /**
506     * Load a PDU from storage by given Uri.
507     *
508     * @param uri The Uri of the PDU to be loaded.
509     * @return A generic PDU object, it may be cast to dedicated PDU.
510     * @throws MmsException Failed to load some fields of a PDU.
511     */
512    public GenericPdu load(Uri uri) throws MmsException {
513        PduCacheEntry cacheEntry = PDU_CACHE_INSTANCE.get(uri);
514        if (cacheEntry != null) {
515            return cacheEntry.getPdu();
516        }
517
518        Cursor c = SqliteWrapper.query(mContext, mContentResolver, uri,
519                        PDU_PROJECTION, null, null, null);
520        PduHeaders headers = new PduHeaders();
521        Set<Entry<Integer, Integer>> set;
522        long msgId = ContentUris.parseId(uri);
523        int msgBox;
524        long threadId;
525
526        try {
527            if ((c == null) || (c.getCount() != 1) || !c.moveToFirst()) {
528                throw new MmsException("Bad uri: " + uri);
529            }
530
531            msgBox = c.getInt(PDU_COLUMN_MESSAGE_BOX);
532            threadId = c.getLong(PDU_COLUMN_THREAD_ID);
533
534            set = ENCODED_STRING_COLUMN_INDEX_MAP.entrySet();
535            for (Entry<Integer, Integer> e : set) {
536                setEncodedStringValueToHeaders(
537                        c, e.getValue(), headers, e.getKey());
538            }
539
540            set = TEXT_STRING_COLUMN_INDEX_MAP.entrySet();
541            for (Entry<Integer, Integer> e : set) {
542                setTextStringToHeaders(
543                        c, e.getValue(), headers, e.getKey());
544            }
545
546            set = OCTET_COLUMN_INDEX_MAP.entrySet();
547            for (Entry<Integer, Integer> e : set) {
548                setOctetToHeaders(
549                        c, e.getValue(), headers, e.getKey());
550            }
551
552            set = LONG_COLUMN_INDEX_MAP.entrySet();
553            for (Entry<Integer, Integer> e : set) {
554                setLongToHeaders(
555                        c, e.getValue(), headers, e.getKey());
556            }
557        } finally {
558            if (c != null) {
559                c.close();
560            }
561        }
562
563        // Check whether 'msgId' has been assigned a valid value.
564        if (msgId == -1L) {
565            throw new MmsException("Error! ID of the message: -1.");
566        }
567
568        // Load address information of the MM.
569        loadAddress(msgId, headers);
570
571        int msgType = headers.getOctet(PduHeaders.MESSAGE_TYPE);
572        PduBody body = new PduBody();
573
574        // For PDU which type is M_retrieve.conf or Send.req, we should
575        // load multiparts and put them into the body of the PDU.
576        if ((msgType == PduHeaders.MESSAGE_TYPE_RETRIEVE_CONF)
577                || (msgType == PduHeaders.MESSAGE_TYPE_SEND_REQ)) {
578            PduPart[] parts = loadParts(msgId);
579            if (parts != null) {
580                int partsNum = parts.length;
581                for (int i = 0; i < partsNum; i++) {
582                    body.addPart(parts[i]);
583                }
584            }
585        }
586
587        GenericPdu pdu = null;
588        switch (msgType) {
589            case PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND:
590                pdu = new NotificationInd(headers);
591                break;
592            case PduHeaders.MESSAGE_TYPE_DELIVERY_IND:
593                pdu = new DeliveryInd(headers);
594                break;
595            case PduHeaders.MESSAGE_TYPE_READ_ORIG_IND:
596                pdu = new ReadOrigInd(headers);
597                break;
598            case PduHeaders.MESSAGE_TYPE_RETRIEVE_CONF:
599                pdu = new RetrieveConf(headers, body);
600                break;
601            case PduHeaders.MESSAGE_TYPE_SEND_REQ:
602                pdu = new SendReq(headers, body);
603                break;
604            case PduHeaders.MESSAGE_TYPE_ACKNOWLEDGE_IND:
605                pdu = new AcknowledgeInd(headers);
606                break;
607            case PduHeaders.MESSAGE_TYPE_NOTIFYRESP_IND:
608                pdu = new NotifyRespInd(headers);
609                break;
610            case PduHeaders.MESSAGE_TYPE_READ_REC_IND:
611                pdu = new ReadRecInd(headers);
612                break;
613            case PduHeaders.MESSAGE_TYPE_SEND_CONF:
614            case PduHeaders.MESSAGE_TYPE_FORWARD_REQ:
615            case PduHeaders.MESSAGE_TYPE_FORWARD_CONF:
616            case PduHeaders.MESSAGE_TYPE_MBOX_STORE_REQ:
617            case PduHeaders.MESSAGE_TYPE_MBOX_STORE_CONF:
618            case PduHeaders.MESSAGE_TYPE_MBOX_VIEW_REQ:
619            case PduHeaders.MESSAGE_TYPE_MBOX_VIEW_CONF:
620            case PduHeaders.MESSAGE_TYPE_MBOX_UPLOAD_REQ:
621            case PduHeaders.MESSAGE_TYPE_MBOX_UPLOAD_CONF:
622            case PduHeaders.MESSAGE_TYPE_MBOX_DELETE_REQ:
623            case PduHeaders.MESSAGE_TYPE_MBOX_DELETE_CONF:
624            case PduHeaders.MESSAGE_TYPE_MBOX_DESCR:
625            case PduHeaders.MESSAGE_TYPE_DELETE_REQ:
626            case PduHeaders.MESSAGE_TYPE_DELETE_CONF:
627            case PduHeaders.MESSAGE_TYPE_CANCEL_REQ:
628            case PduHeaders.MESSAGE_TYPE_CANCEL_CONF:
629                throw new MmsException(
630                        "Unsupported PDU type: " + Integer.toHexString(msgType));
631
632            default:
633                throw new MmsException(
634                        "Unrecognized PDU type: " + Integer.toHexString(msgType));
635        }
636
637        cacheEntry = new PduCacheEntry(pdu, msgBox, threadId);
638        PDU_CACHE_INSTANCE.put(uri, cacheEntry);
639        return pdu;
640    }
641
642    private void persistAddress(
643            long msgId, int type, EncodedStringValue[] array) {
644        ContentValues values = new ContentValues(3);
645
646        for (EncodedStringValue addr : array) {
647            values.clear(); // Clear all values first.
648            values.put(Addr.ADDRESS, toIsoString(addr.getTextString()));
649            values.put(Addr.CHARSET, addr.getCharacterSet());
650            values.put(Addr.TYPE, type);
651
652            Uri uri = Uri.parse("content://mms/" + msgId + "/addr");
653            SqliteWrapper.insert(mContext, mContentResolver, uri, values);
654        }
655    }
656
657    public Uri persistPart(PduPart part, long msgId)
658            throws MmsException {
659        Uri uri = Uri.parse("content://mms/" + msgId + "/part");
660        ContentValues values = new ContentValues(8);
661
662        int charset = part.getCharset();
663        if (charset != 0 ) {
664            values.put(Part.CHARSET, charset);
665        }
666
667        String contentType = null;
668        if (part.getContentType() != null) {
669            contentType = toIsoString(part.getContentType());
670            values.put(Part.CONTENT_TYPE, contentType);
671            // To ensure the SMIL part is always the first part.
672            if (ContentType.APP_SMIL.equals(contentType)) {
673                values.put(Part.SEQ, -1);
674            }
675        } else {
676            throw new MmsException("MIME type of the part must be set.");
677        }
678
679        if (part.getFilename() != null) {
680            String fileName = new String(part.getFilename());
681            values.put(Part.FILENAME, fileName);
682        }
683
684        if (part.getName() != null) {
685            String name = new String(part.getName());
686            values.put(Part.NAME, name);
687        }
688
689        Object value = null;
690        if (part.getContentDisposition() != null) {
691            value = toIsoString(part.getContentDisposition());
692            values.put(Part.CONTENT_DISPOSITION, (String) value);
693        }
694
695        if (part.getContentId() != null) {
696            value = toIsoString(part.getContentId());
697            values.put(Part.CONTENT_ID, (String) value);
698        }
699
700        if (part.getContentLocation() != null) {
701            value = toIsoString(part.getContentLocation());
702            values.put(Part.CONTENT_LOCATION, (String) value);
703        }
704
705        Uri res = SqliteWrapper.insert(mContext, mContentResolver, uri, values);
706        if (res == null) {
707            throw new MmsException("Failed to persist part, return null.");
708        }
709
710        persistData(part, res, contentType);
711        // After successfully store the data, we should update
712        // the dataUri of the part.
713        part.setDataUri(res);
714
715        return res;
716    }
717
718    /**
719     * Save data of the part into storage. The source data may be given
720     * by a byte[] or a Uri. If it's a byte[], directly save it
721     * into storage, otherwise load source data from the dataUri and then
722     * save it. If the data is an image, we may scale down it according
723     * to user preference.
724     *
725     * @param part The PDU part which contains data to be saved.
726     * @param uri The URI of the part.
727     * @param contentType The MIME type of the part.
728     * @throws MmsException Cannot find source data or error occurred
729     *         while saving the data.
730     */
731    private void persistData(PduPart part, Uri uri,
732            String contentType)
733            throws MmsException {
734        OutputStream os = null;
735        InputStream is = null;
736
737        try {
738            byte[] data = part.getData();
739            if ("text/plain".equals(contentType) || "application/smil".equals(contentType)) {
740                ContentValues cv = new ContentValues();
741                cv.put(Telephony.Mms.Part.TEXT, new EncodedStringValue(data).getString());
742                if (mContentResolver.update(uri, cv, null, null) != 1) {
743                    throw new MmsException("unable to update " + uri.toString());
744                }
745            } else {
746                os = mContentResolver.openOutputStream(uri);
747                if (data == null) {
748                    Uri dataUri = part.getDataUri();
749                    if ((dataUri == null) || (dataUri == uri)) {
750                        Log.w(TAG, "Can't find data for this part.");
751                        return;
752                    }
753                    is = mContentResolver.openInputStream(dataUri);
754
755                    if (LOCAL_LOGV) {
756                        Log.v(TAG, "Saving data to: " + uri);
757                    }
758
759                    byte[] buffer = new byte[256];
760                    for (int len = 0; (len = is.read(buffer)) != -1; ) {
761                        os.write(buffer, 0, len);
762                    }
763                } else {
764                    if (LOCAL_LOGV) {
765                        Log.v(TAG, "Saving data to: " + uri);
766                    }
767                    os.write(data);
768                }
769            }
770        } catch (FileNotFoundException e) {
771            Log.e(TAG, "Failed to open Input/Output stream.", e);
772            throw new MmsException(e);
773        } catch (IOException e) {
774            Log.e(TAG, "Failed to read/write data.", e);
775            throw new MmsException(e);
776        } finally {
777            if (os != null) {
778                try {
779                    os.close();
780                } catch (IOException e) {
781                    Log.e(TAG, "IOException while closing: " + os, e);
782                } // Ignore
783            }
784            if (is != null) {
785                try {
786                    is.close();
787                } catch (IOException e) {
788                    Log.e(TAG, "IOException while closing: " + is, e);
789                } // Ignore
790            }
791        }
792    }
793
794    private void updateAddress(
795            long msgId, int type, EncodedStringValue[] array) {
796        // Delete old address information and then insert new ones.
797        SqliteWrapper.delete(mContext, mContentResolver,
798                Uri.parse("content://mms/" + msgId + "/addr"),
799                Addr.TYPE + "=" + type, null);
800
801        persistAddress(msgId, type, array);
802    }
803
804    /**
805     * Update headers of a SendReq.
806     *
807     * @param uri The PDU which need to be updated.
808     * @param pdu New headers.
809     * @throws MmsException Bad URI or updating failed.
810     */
811    public void updateHeaders(Uri uri, SendReq sendReq) {
812        PDU_CACHE_INSTANCE.purge(uri);
813
814        ContentValues values = new ContentValues(10);
815        byte[] contentType = sendReq.getContentType();
816        if (contentType != null) {
817            values.put(Mms.CONTENT_TYPE, toIsoString(contentType));
818        }
819
820        long date = sendReq.getDate();
821        if (date != -1) {
822            values.put(Mms.DATE, date);
823        }
824
825        int deliveryReport = sendReq.getDeliveryReport();
826        if (deliveryReport != 0) {
827            values.put(Mms.DELIVERY_REPORT, deliveryReport);
828        }
829
830        long expiry = sendReq.getExpiry();
831        if (expiry != -1) {
832            values.put(Mms.EXPIRY, expiry);
833        }
834
835        byte[] msgClass = sendReq.getMessageClass();
836        if (msgClass != null) {
837            values.put(Mms.MESSAGE_CLASS, toIsoString(msgClass));
838        }
839
840        int priority = sendReq.getPriority();
841        if (priority != 0) {
842            values.put(Mms.PRIORITY, priority);
843        }
844
845        int readReport = sendReq.getReadReport();
846        if (readReport != 0) {
847            values.put(Mms.READ_REPORT, readReport);
848        }
849
850        byte[] transId = sendReq.getTransactionId();
851        if (transId != null) {
852            values.put(Mms.TRANSACTION_ID, toIsoString(transId));
853        }
854
855        EncodedStringValue subject = sendReq.getSubject();
856        if (subject != null) {
857            values.put(Mms.SUBJECT, toIsoString(subject.getTextString()));
858            values.put(Mms.SUBJECT_CHARSET, subject.getCharacterSet());
859        } else {
860            values.put(Mms.SUBJECT, "");
861        }
862
863        long messageSize = sendReq.getMessageSize();
864        if (messageSize > 0) {
865            values.put(Mms.MESSAGE_SIZE, messageSize);
866        }
867
868        PduHeaders headers = sendReq.getPduHeaders();
869        HashSet<String> recipients = new HashSet<String>();
870        for (int addrType : ADDRESS_FIELDS) {
871            EncodedStringValue[] array = null;
872            if (addrType == PduHeaders.FROM) {
873                EncodedStringValue v = headers.getEncodedStringValue(addrType);
874                if (v != null) {
875                    array = new EncodedStringValue[1];
876                    array[0] = v;
877                }
878            } else {
879                array = headers.getEncodedStringValues(addrType);
880            }
881
882            if (array != null) {
883                long msgId = ContentUris.parseId(uri);
884                updateAddress(msgId, addrType, array);
885                if (addrType == PduHeaders.TO) {
886                    for (EncodedStringValue v : array) {
887                        if (v != null) {
888                            recipients.add(v.getString());
889                        }
890                    }
891                }
892            }
893        }
894
895        long threadId = Threads.getOrCreateThreadId(mContext, recipients);
896        values.put(Mms.THREAD_ID, threadId);
897
898        SqliteWrapper.update(mContext, mContentResolver, uri, values, null, null);
899    }
900
901    private void updatePart(Uri uri, PduPart part) throws MmsException {
902        ContentValues values = new ContentValues(7);
903
904        int charset = part.getCharset();
905        if (charset != 0 ) {
906            values.put(Part.CHARSET, charset);
907        }
908
909        String contentType = null;
910        if (part.getContentType() != null) {
911            contentType = toIsoString(part.getContentType());
912            values.put(Part.CONTENT_TYPE, contentType);
913        } else {
914            throw new MmsException("MIME type of the part must be set.");
915        }
916
917        if (part.getFilename() != null) {
918            String fileName = new String(part.getFilename());
919            values.put(Part.FILENAME, fileName);
920        }
921
922        if (part.getName() != null) {
923            String name = new String(part.getName());
924            values.put(Part.NAME, name);
925        }
926
927        Object value = null;
928        if (part.getContentDisposition() != null) {
929            value = toIsoString(part.getContentDisposition());
930            values.put(Part.CONTENT_DISPOSITION, (String) value);
931        }
932
933        if (part.getContentId() != null) {
934            value = toIsoString(part.getContentId());
935            values.put(Part.CONTENT_ID, (String) value);
936        }
937
938        if (part.getContentLocation() != null) {
939            value = toIsoString(part.getContentLocation());
940            values.put(Part.CONTENT_LOCATION, (String) value);
941        }
942
943        SqliteWrapper.update(mContext, mContentResolver, uri, values, null, null);
944
945        // Only update the data when:
946        // 1. New binary data supplied or
947        // 2. The Uri of the part is different from the current one.
948        if ((part.getData() != null)
949                || (uri != part.getDataUri())) {
950            persistData(part, uri, contentType);
951        }
952    }
953
954    /**
955     * Update all parts of a PDU.
956     *
957     * @param uri The PDU which need to be updated.
958     * @param body New message body of the PDU.
959     * @throws MmsException Bad URI or updating failed.
960     */
961    public void updateParts(Uri uri, PduBody body)
962            throws MmsException {
963        PduCacheEntry cacheEntry = PDU_CACHE_INSTANCE.get(uri);
964        if (cacheEntry != null) {
965            ((MultimediaMessagePdu) cacheEntry.getPdu()).setBody(body);
966        }
967
968        ArrayList<PduPart> toBeCreated = new ArrayList<PduPart>();
969        HashMap<Uri, PduPart> toBeUpdated = new HashMap<Uri, PduPart>();
970
971        int partsNum = body.getPartsNum();
972        StringBuilder filter = new StringBuilder().append('(');
973        for (int i = 0; i < partsNum; i++) {
974            PduPart part = body.getPart(i);
975            Uri partUri = part.getDataUri();
976            if ((partUri == null) || !partUri.getAuthority().startsWith("mms")) {
977                toBeCreated.add(part);
978            } else {
979                toBeUpdated.put(partUri, part);
980
981                // Don't use 'i > 0' to determine whether we should append
982                // 'AND' since 'i = 0' may be skipped in another branch.
983                if (filter.length() > 1) {
984                    filter.append(" AND ");
985                }
986
987                filter.append(Part._ID);
988                filter.append("!=");
989                DatabaseUtils.appendEscapedSQLString(filter, partUri.getLastPathSegment());
990            }
991        }
992        filter.append(')');
993
994        long msgId = ContentUris.parseId(uri);
995
996        // Remove the parts which doesn't exist anymore.
997        SqliteWrapper.delete(mContext, mContentResolver,
998                Uri.parse(Mms.CONTENT_URI + "/" + msgId + "/part"),
999                filter.length() > 2 ? filter.toString() : null, null);
1000
1001        // Create new parts which didn't exist before.
1002        for (PduPart part : toBeCreated) {
1003            persistPart(part, msgId);
1004        }
1005
1006        // Update the modified parts.
1007        for (Map.Entry<Uri, PduPart> e : toBeUpdated.entrySet()) {
1008            updatePart(e.getKey(), e.getValue());
1009        }
1010    }
1011
1012    /**
1013     * Persist a PDU object to specific location in the storage.
1014     *
1015     * @param pdu The PDU object to be stored.
1016     * @param uri Where to store the given PDU object.
1017     * @return A Uri which can be used to access the stored PDU.
1018     */
1019    public Uri persist(GenericPdu pdu, Uri uri) throws MmsException {
1020        if (uri == null) {
1021            throw new MmsException("Uri may not be null.");
1022        }
1023
1024        Integer msgBox = MESSAGE_BOX_MAP.get(uri);
1025        if (msgBox == null) {
1026            throw new MmsException(
1027                    "Bad destination, must be one of "
1028                    + "content://mms/inbox, content://mms/sent, "
1029                    + "content://mms/drafts, content://mms/outbox, "
1030                    + "content://mms/temp.");
1031        }
1032        PDU_CACHE_INSTANCE.purge(uri);
1033
1034        PduHeaders header = pdu.getPduHeaders();
1035        PduBody body = null;
1036        ContentValues values = new ContentValues();
1037        Set<Entry<Integer, String>> set;
1038
1039        set = ENCODED_STRING_COLUMN_NAME_MAP.entrySet();
1040        for (Entry<Integer, String> e : set) {
1041            int field = e.getKey();
1042            EncodedStringValue encodedString = header.getEncodedStringValue(field);
1043            if (encodedString != null) {
1044                String charsetColumn = CHARSET_COLUMN_NAME_MAP.get(field);
1045                values.put(e.getValue(), toIsoString(encodedString.getTextString()));
1046                values.put(charsetColumn, encodedString.getCharacterSet());
1047            }
1048        }
1049
1050        set = TEXT_STRING_COLUMN_NAME_MAP.entrySet();
1051        for (Entry<Integer, String> e : set){
1052            byte[] text = header.getTextString(e.getKey());
1053            if (text != null) {
1054                values.put(e.getValue(), toIsoString(text));
1055            }
1056        }
1057
1058        set = OCTET_COLUMN_NAME_MAP.entrySet();
1059        for (Entry<Integer, String> e : set){
1060            int b = header.getOctet(e.getKey());
1061            if (b != 0) {
1062                values.put(e.getValue(), b);
1063            }
1064        }
1065
1066        set = LONG_COLUMN_NAME_MAP.entrySet();
1067        for (Entry<Integer, String> e : set){
1068            long l = header.getLongInteger(e.getKey());
1069            if (l != -1L) {
1070                values.put(e.getValue(), l);
1071            }
1072        }
1073
1074        HashMap<Integer, EncodedStringValue[]> addressMap =
1075                new HashMap<Integer, EncodedStringValue[]>(ADDRESS_FIELDS.length);
1076        // Save address information.
1077        for (int addrType : ADDRESS_FIELDS) {
1078            EncodedStringValue[] array = null;
1079            if (addrType == PduHeaders.FROM) {
1080                EncodedStringValue v = header.getEncodedStringValue(addrType);
1081                if (v != null) {
1082                    array = new EncodedStringValue[1];
1083                    array[0] = v;
1084                }
1085            } else {
1086                array = header.getEncodedStringValues(addrType);
1087            }
1088            addressMap.put(addrType, array);
1089        }
1090
1091        HashSet<String> recipients = new HashSet<String>();
1092        long threadId = DUMMY_THREAD_ID;
1093        int msgType = pdu.getMessageType();
1094        // Here we only allocate thread ID for M-Notification.ind,
1095        // M-Retrieve.conf and M-Send.req.
1096        // Some of other PDU types may be allocated a thread ID outside
1097        // this scope.
1098        if ((msgType == PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND)
1099                || (msgType == PduHeaders.MESSAGE_TYPE_RETRIEVE_CONF)
1100                || (msgType == PduHeaders.MESSAGE_TYPE_SEND_REQ)) {
1101            EncodedStringValue[] array = null;
1102            switch (msgType) {
1103                case PduHeaders.MESSAGE_TYPE_NOTIFICATION_IND:
1104                case PduHeaders.MESSAGE_TYPE_RETRIEVE_CONF:
1105                    array = addressMap.get(PduHeaders.FROM);
1106                    break;
1107                case PduHeaders.MESSAGE_TYPE_SEND_REQ:
1108                    array = addressMap.get(PduHeaders.TO);
1109                    break;
1110            }
1111
1112            if (array != null) {
1113                for (EncodedStringValue v : array) {
1114                    if (v != null) {
1115                        recipients.add(v.getString());
1116                    }
1117                }
1118            }
1119            threadId = Threads.getOrCreateThreadId(mContext, recipients);
1120        }
1121        values.put(Mms.THREAD_ID, threadId);
1122
1123        // Save parts first to avoid inconsistent message is loaded
1124        // while saving the parts.
1125        long dummyId = System.currentTimeMillis(); // Dummy ID of the msg.
1126        // Get body if the PDU is a RetrieveConf or SendReq.
1127        if (pdu instanceof MultimediaMessagePdu) {
1128            body = ((MultimediaMessagePdu) pdu).getBody();
1129            // Start saving parts if necessary.
1130            if (body != null) {
1131                int partsNum = body.getPartsNum();
1132                for (int i = 0; i < partsNum; i++) {
1133                    PduPart part = body.getPart(i);
1134                    persistPart(part, dummyId);
1135                }
1136            }
1137        }
1138
1139        Uri res = SqliteWrapper.insert(mContext, mContentResolver, uri, values);
1140        if (res == null) {
1141            throw new MmsException("persist() failed: return null.");
1142        }
1143
1144        // Get the real ID of the PDU and update all parts which were
1145        // saved with the dummy ID.
1146        long msgId = ContentUris.parseId(res);
1147        values = new ContentValues(1);
1148        values.put(Part.MSG_ID, msgId);
1149        SqliteWrapper.update(mContext, mContentResolver,
1150                             Uri.parse("content://mms/" + dummyId + "/part"),
1151                             values, null, null);
1152        // We should return the longest URI of the persisted PDU, for
1153        // example, if input URI is "content://mms/inbox" and the _ID of
1154        // persisted PDU is '8', we should return "content://mms/inbox/8"
1155        // instead of "content://mms/8".
1156        // FIXME: Should the MmsProvider be responsible for this???
1157        res = Uri.parse(uri + "/" + msgId);
1158
1159        // Save address information.
1160        for (int addrType : ADDRESS_FIELDS) {
1161            EncodedStringValue[] array = addressMap.get(addrType);
1162            if (array != null) {
1163                persistAddress(msgId, addrType, array);
1164            }
1165        }
1166
1167        return res;
1168    }
1169
1170    /**
1171     * Move a PDU object from one location to another.
1172     *
1173     * @param from Specify the PDU object to be moved.
1174     * @param to The destination location, should be one of the following:
1175     *        "content://mms/inbox", "content://mms/sent",
1176     *        "content://mms/drafts", "content://mms/outbox",
1177     *        "content://mms/trash".
1178     * @return New Uri of the moved PDU.
1179     * @throws MmsException Error occurred while moving the message.
1180     */
1181    public Uri move(Uri from, Uri to) throws MmsException {
1182        // Check whether the 'msgId' has been assigned a valid value.
1183        long msgId = ContentUris.parseId(from);
1184        if (msgId == -1L) {
1185            throw new MmsException("Error! ID of the message: -1.");
1186        }
1187
1188        // Get corresponding int value of destination box.
1189        Integer msgBox = MESSAGE_BOX_MAP.get(to);
1190        if (msgBox == null) {
1191            throw new MmsException(
1192                    "Bad destination, must be one of "
1193                    + "content://mms/inbox, content://mms/sent, "
1194                    + "content://mms/drafts, content://mms/outbox, "
1195                    + "content://mms/temp.");
1196        }
1197
1198        ContentValues values = new ContentValues(1);
1199        values.put(Mms.MESSAGE_BOX, msgBox);
1200        SqliteWrapper.update(mContext, mContentResolver, from, values, null, null);
1201        return ContentUris.withAppendedId(to, msgId);
1202    }
1203
1204    /**
1205     * Wrap a byte[] into a String.
1206     */
1207    public static String toIsoString(byte[] bytes) {
1208        try {
1209            return new String(bytes, CharacterSets.MIMENAME_ISO_8859_1);
1210        } catch (UnsupportedEncodingException e) {
1211            // Impossible to reach here!
1212            Log.e(TAG, "ISO_8859_1 must be supported!", e);
1213            return "";
1214        }
1215    }
1216
1217    /**
1218     * Unpack a given String into a byte[].
1219     */
1220    public static byte[] getBytes(String data) {
1221        try {
1222            return data.getBytes(CharacterSets.MIMENAME_ISO_8859_1);
1223        } catch (UnsupportedEncodingException e) {
1224            // Impossible to reach here!
1225            Log.e(TAG, "ISO_8859_1 must be supported!", e);
1226            return new byte[0];
1227        }
1228    }
1229
1230    /**
1231     * Remove all objects in the temporary path.
1232     */
1233    public void release() {
1234        Uri uri = Uri.parse(TEMPORARY_DRM_OBJECT_URI);
1235        SqliteWrapper.delete(mContext, mContentResolver, uri, null, null);
1236    }
1237
1238    /**
1239     * Find all messages to be sent or downloaded before certain time.
1240     */
1241    public Cursor getPendingMessages(long dueTime) {
1242        Uri.Builder uriBuilder = PendingMessages.CONTENT_URI.buildUpon();
1243        uriBuilder.appendQueryParameter("protocol", "mms");
1244
1245        String selection = PendingMessages.ERROR_TYPE + " < ?"
1246                + " AND " + PendingMessages.DUE_TIME + " <= ?";
1247
1248        String[] selectionArgs = new String[] {
1249                String.valueOf(MmsSms.ERR_TYPE_GENERIC_PERMANENT),
1250                String.valueOf(dueTime)
1251        };
1252
1253        return SqliteWrapper.query(mContext, mContentResolver,
1254                uriBuilder.build(), null, selection, selectionArgs,
1255                PendingMessages.DUE_TIME);
1256    }
1257}
1258